Browsing by Subject "COSTS"

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  • Di Minin, Enrico; Slotow, Rob; Fink, Christoph; Bauer, Hans; Paker, Craig (2021)
    African lions (Panthera leo) and African savanna (Loxodonta africana) and forest (L. cyclotis) elephants pose threats to people, crops, and livestock, and are themselves threatened with extinction. Here, we map these human-wildlife conflicts across Africa. Eighty-two percent of sites containing lions and elephants are adjacent to areas with considerable human pressure. Areas at severe risk of conflict (defined as high densities of humans, crops, and cattle) comprise 9% of the perimeter of these species' ranges and are found in 18 countries hosting, respectively, similar to 74% and 41% of African lion and elephant populations. Although a variety of alternative conflict-mitigation strategies could be deployed, we focus on assessing the potential of high-quality mitigation fences. Our spatial and economic assessments suggest that investments in the construction and maintenance of strategically located mitigation fences would be a cost-effective strategy to support local communities, protect people from dangerous wildlife, and prevent further declines in lion and elephant populations.
  • Ala-Houhala, M.; Koukila-Kahkola, P.; Antikainen, Jenni; Valve, J.; Kirveskari, J.; Anttila, V. -J. (2018)
    Objectives: To assess the clinical use of panfungal PCR for diagnosis of invasive fungal diseases (IFDs). We focused on the deep tissue samples. Methods: We first described the design of panfungal PCR, which is in clinical use at Helsinki University Hospital. Next we retrospectively evaluated the results of 307 fungal PCR tests performed from 2013 to 2015. Samples were taken from normally sterile tissues and fluids. The patient population was nonselected. We classified the likelihood of IFD according to the criteria of the European Organization for Research and Treatment of Cancer/Invasive Fungal Infections Cooperative Group and the National Institute of Allergy and Infectious Diseases Mycoses Study Group (EORTC/MSG), comparing the fungal PCR results to the likelihood of IFD along with culture and microscopy results. Results: There were 48 positive (16%) and 259 negative (84%) PCR results. The sensitivity and specificity of PCR for diagnosing IFDs were 60.5% and 91.7%, respectively, while the negative predictive value and positive predictive value were 93.4% and 54.2%, respectively. The concordance between the PCR and the culture results was 86% and 87% between PCR and microscopy, respectively. Of the 48 patients with positive PCR results, 23 had a proven or probable IFD. Conclusions: Fungal PCR can be useful for diagnosing IFDs in deep tissue samples. It is beneficial to combine fungal PCR with culture and microscopy. M. Ala-Houhala, Clin Microbiol Infect 2018;24:301 (C) 2017 European Society of Clinical Microbiology and Infectious Diseases. Published by Elsevier Ltd. All rights reserved.
  • Bellingan, Geoff; Brealey, David; Mancebo, Jordi; Mercat, Alain; Patroniti, Nicolo; Pettilä, Ville; Quintel, Michael; Vincent, Jean-Louis; Maksimow, Mikael; Jalkanen, Markku; Piippo, Ilse; Ranieri, V. Marco (2017)
    Background: Acute respiratory distress syndrome (ARDS) results in vascular leakage, inflammation and respiratory failure. There are currently no approved pharmacological treatments for ARDS and standard of care involves treatment of the underlying cause, and supportive care. The vascular leakage may be related to reduced concentrations of local adenosine, which is involved in maintaining endothelial barrier function. Interferon (IFN) beta-1a up-regulates the cell surface ecto-5'-nucleotidase cluster of differentiation 73 (CD73), which increases adenosine levels, and IFN beta-1 may, therefore, be a potential treatment for ARDS. In a phase I/II, open-label study in 37 patients with acute lung injury (ALI)/ARDS, recombinant human IFN beta-1a was well tolerated and mortality rates were significantly lower in treated than in control patients. Methods/design: In this phase III, double-blind, randomized, parallel-group trial, the efficacy and safety of recombinant human IFN beta-1a (FP-1201-lyo) will be compared with placebo in adult patients with ARDS. Patients will be randomly assigned to receive 10 mu g FP-1201-lyo or placebo administered intravenously once daily for 6 days and will be monitored for 28 days or until discharged from the intensive care unit. Follow-up visits will then take place at days 90, 180 and 360. The primary endpoint is a composite endpoint including any cause of death at 28 days and days free of mechanical ventilation within 28 days among survivors. Secondary endpoints include: all-cause mortality at 28, 90, 180 and 360 days; organ failure-free days; length of hospital stay; pharmacodynamic assessment including measurement of myxovirus resistance protein A concentrations; and measures of quality of life, respiratory and neurological function at 180 and 360 days. The estimated sample size to demonstrate a reduction in the primary outcome between groups from 30% to 15% is 300 patients, and the study will be conducted in 70-80 centers in nine countries across Europe. Discussion: There are no effective specific treatments for patients with ARDS and mortality rates remain high. The results from this study will provide evidence regarding the efficacy of a potential new therapeutic agent, FP-1201-lyo, in improving the clinical course and outcome for patients with moderate/severe ARDS.
  • Kullberg, Peter; Toivonen, Tuuli; Pouzols, Federico Montesino; Lehtomäki, Joona; Di Minin, Enrico; Moilanen, Atte (2015)
    Complementarity and cost-efficiency are widely used principles for protected area network design. Despite the wide use and robust theoretical underpinnings, their effects on the performance and patterns of priority areas are rarely studied in detail. Here we compare two approaches for identifying the management priority areas inside the global protected area network: 1) a scoring-based approach, used in recently published analysis and 2) a spatial prioritization method, which accounts for complementarity and area-efficiency. Using the same IUCN species distribution data the complementarity method found an equal-area set of priority areas with double the mean species ranges covered compared to the scoringbased approach. The complementarity set also had 72% more species with full ranges covered, and lacked any coverage only for half of the species compared to the scoring approach. Protected areas in our complementarity-based solution were on average smaller and geographically more scattered. The large difference between the two solutions highlights the need for critical thinking about the selected prioritization method. According to our analysis, accounting for complementarity and area-efficiency can lead to considerable improvements when setting management priorities for the global protected area network.
  • Pankakoski, Maiju; Heinävaara, Sirpa; Anttila, Ahti; Sarkeala, Tytti (2020)
    An invitational organized cervical cancer screening together with widely spread opportunistic testing has coexisted for decades in Finland. The aim of this study was to examine the coverage of cervical tests by age, socioeconomic status, ethnicity and municipality type within and outside the organized screening program. We had a cohort of women of whom 1,2 million were in the target age range of screening and residing in Finland in 2010-2014. Data on Pap and/or HPV-tests within and outside the screening program were collected from the Mass Screening Registry, the pathology laboratories and the health insurance reimbursement registry and fiveyear population coverages of tests were reported. The total test coverage was 86.0%; 95% CI, (85.8-86.1), and was notably lower for those with an unknown socioeconomic status and pensioners (68.8%; 95% CI, (67.9-69.6) and 77.1%; 95% CI, (76.5-77.6), respectively) compared to upper-level employers (89.8%; 95% CI, (89.5-90.2)). Coverage was also lower for non-native speaking women (72.4%; 95% CI, (71.8-73.0)) compared to native speakers (86.9%; 95% CI, (86.7-87.0)) and for women living in urban municipalities (85.5%; 95% CI, (85.3-85.7)) compared to semi-urban (87.4%; 95% CI, (87.0-87.8)). Although overall coverage was high, tests within and outside the program seemed to concentrate on women with presumably good access to health services. Tests outside the program were especially common among young women who are at a low risk of invasive cervical cancer. Efforts should be made to reduce excessive opportunistic testing and to increase attendance at the program among hard-to-reach populations.
  • Liimatta, Heini; Lampela, Pekka; Laitinen-Parkkonen, Pirjo; Pitkälä, Kaisu H. (2019)
    Objective: We explored the effectiveness of preventive home visits on the health-related quality-of-life (HRQoL) and mortality among independently community-dwelling older adults. Design: A randomised controlled trial. Subjects: Independently home-dwelling older adults 75 years and older, consisting of 211 in the intervention and 211 in the control group. Setting: Hyvinkaa town municipality, Finland. Main outcome measures: We used the change in HRQoL measured by the 15D scale as our primary outcome. Mortality at two years was retrieved from central registers. Results: At the one-year time point, the HRQoL according to the 15D scores deteriorated in the control group, whereas we found no change in the intervention group. The difference between the 15D score changes between the groups was -0.015 (95% CI -0.029 to -0.0016; p = 0.028, adjusted for age, sex, and baseline value). At the two-year time point as the visits ended, that difference diminished. There was no difference in mortality between the groups during the 24-month follow-up. Conclusion: Preventive home visits implemented by a multidisciplinary team with CGA appear to help slow down the decline in HRQoL among older adults, although the effect diminishes when the visits end.
  • Niinimaki, Maarit; Veleva, Zdravka; Martikainen, Hannu (2015)
    Objective: The study was aimed to evaluate which factors affect the cumulative live birth rate after elective single embryo transfer in women younger than 36 years. Additionally, number of children in women with more than one delivery per ovum pick-up after fresh elective single embryo transfer and subsequent frozen embryo transfers was assessed. Study design: Retrospective cohort study analysing data of a university hospital's infertility clinic in 2001-2010. A total of 739 IVF/ICSI cycles with elective single embryo transfer were included. Analyses were made per ovum pick-up including fresh and subsequent frozen embryo transfers. Factors affecting cumulative live birth rates were examined in uni- and multivariate analyses. A secondary endpoint was the number of children born after all treatments. Results: In the fresh cycles, the live birth rate was 29.2% and the cumulative live birth rate was 51.3%, with a twin rate of 3.4%. In the multivariate analysis, having two (odds ratio (OR) 1.73; 95% confidence interval (CI) 1.12-2.67) or >= 3 top embryos (OR 2.66; 95% CI 1.79-3.95) was associated with higher odds for live birth after fresh and frozen embryo cycles. Age, body mass index, duration of infertility, diagnosis or total gonadotropin dose were not associated with the cumulative live birth rate. In cycles with one top embryo, the cumulative live birth rate was 40.2%, whereas it was 64.1% in those with at least three top embryos. Of women who had a live birth in the fresh cycle, 20.4% had more than one child after all frozen embryo transfers. Among women with three or more top embryos after ovum pick-up, 16.1% gave birth to more than one child. Conclusion: The cumulative live birth rate in this age group varies from 40% to 64% and is dependent on the quality of embryos. Women with three or more top embryos have good chance of having more than one child per ovum pick-up without elevated risk of multiple pregnancies. (C) 2015 Elsevier Ireland Ltd. All rights reserved.
  • EPO-TBI Investigators Anzics Clin; Skrifvars, Markus B. (2019)
    Background Acute kidney injury (AKI) in traumatic brain injury (TBI) is poorly understood and it is unknown if it can be attenuated using erythropoietin (EPO). Methods Pre-planned analysis of patients included in the EPO-TBI ( NCT00987454) trial who were randomized to weekly EPO (40 000 units) or placebo (0.9% sodium chloride) subcutaneously up to three doses or until intensive care unit (ICU) discharge. Creatinine levels and urinary output (up to 7 days) were categorized according to the Kidney Disease Improving Global Outcome (KDIGO) classification. Severity of TBI was categorized with the International Mission for Prognosis and Analysis of Clinical Trials in TBI. Results Of 3348 screened patients, 606 were randomized and 603 were analyzed. Of these, 82 (14%) patients developed AKI according to KDIGO (60 [10%] with KDIGO 1, 11 [2%] patients with KDIGO 2, and 11 [2%] patients with KDIGO 3). Male gender (hazard ratio [HR] 4.0 95% confidence interval [CI] 1.4-11.2, P = 0.008) and severity of TBI (HR 1.3 95% CI 1.1-1.4, P <0.001 for each 10% increase in risk of poor 6 month outcome) predicted time to AKI. KDIGO stage 1 (HR 8.8 95% CI 4.5-17, P <0.001), KDIGO stage 2 (HR 13.2 95% CI 3.9-45.2, P <0.001) and KDIGO stage 3 (HR 11.7 95% CI 3.5-39.7, P <0.005) predicted time to mortality. EPO did not influence time to AKI (HR 1.08 95% CI 0.7-1.67, P = 0.73) or creatinine levels during ICU stay (P = 0.09). Conclusions Acute kidney injury is more common in male patients and those with severe compared to moderate TBI and appears associated with worse outcome. EPO does not prevent AKI after TBI.
  • Mattila, Anniina L. K.; Jiggins, Chris D.; Opedal, Øystein H.; Montejo-Kovacevich, Gabriela; de Castro, Érika; McMillan, William O.; Bacquet, Caroline; Saastamoinen, Marjo (2021)
    Chemical defences against predators underlie the evolution of aposematic coloration and mimicry, which are classic examples of adaptive evolution. Surprisingly little is known about the roles of ecological and evolutionary processes maintaining defence variation, and how they may feedback to shape the evolutionary dynamics of species. Cyanogenic Heliconius butterflies exhibit diverse warning color patterns and mimicry, thus providing a useful framework for investigating these questions. We studied intraspecific variation in de novo biosynthesized cyanogenic toxicity and its potential ecological and evolutionary sources in wild populations of Heliconius erato along environmental gradients, in common-garden broods and with feeding treatments. Our results demonstrate substantial intraspecific variation, including detectable variation among broods reared in a common garden. The latter estimate suggests considerable evolutionary potential in this trait, although predicting the response to selection is likely complicated due to the observed skewed distribution of toxicity values and the signatures of maternal contributions to the inheritance of toxicity. Larval diet contributed little to toxicity variation. Furthermore, toxicity profiles were similar along steep rainfall and altitudinal gradients, providing little evidence for these factors explaining variation in biosynthesized toxicity in natural populations. In contrast, there were striking differences in the chemical profiles of H. erato from geographically distant populations, implying potential local adaptation in the acquisition mechanisms and levels of defensive compounds. The results highlight the extensive variation and potential for adaptive evolution in defense traits for aposematic and mimetic species, which may contribute to the high diversity often found in these systems.
  • Haagsma, Juanita A.; Olij, Branko F.; Majdan, Marek; van Beeck, Ed F.; Vos, Theo; Castle, Chris D.; Dingels, Zachary; Fox, Jack T.; Hamilton, Erin B.; Liu, Zichen; Roberts, Nicholas L. S.; Sylte, Dillon O.; Aremu, Olatunde; Baernighausen, Till Winfried; Borzi, Antonio M.; Briggs, Andrew M.; Carrero, Juan J.; Cooper, Cyrus; El-Khatib, Ziad; Ellingsen, Christian Lycke; Fereshtehnejad, Seyed-Mohammad; Filip, Irina; Fischer, Florian; Haro, Josep Maria; Jonas, Jost B.; Kiadaliri, Aliasghar A.; Koyanagi, Ai; Lunevicius, Raimundas; Meretoja, Tuomo J.; Mohammed, Shafiu; Pathak, Ashish; Radfar, Amir; Rawaf, Salman; Rawaf, David Laith; Riera, Lidia Sanchez; Shiue, Ivy; Vasankari, Tommi Juhani; James, Spencer L.; Polinder, Suzanne (2020)
    Introduction Falls in older aged adults are an important public health problem. Insight into differences in fall-related injury rates between countries can serve as important input for identifying and evaluating prevention strategies. The objectives of this study were to compare Global Burden of Disease (GBD) 2017 estimates on incidence, mortality and disability-adjusted life years (DALYs) due to fall-related injury in older adults across 22 countries in the Western European region and to examine changes over a 28-year period. Methods We performed a secondary database descriptive study using the GBD 2017 results on age-standardised fall-related injury in older adults aged 70 years and older in 22 countries from 1990 to 2017. Results In 2017, in the Western European region, 13 840 per 100 000 (uncertainty interval (UI) 11 837-16 113) older adults sought medical treatment for fall-related injury, ranging from 7594 per 100 000 (UI 6326-9032) in Greece to 19 796 per 100 000 (UI 15 536-24 233) in Norway. Since 1990, fall-related injury DALY rates showed little change for the whole region, but patterns varied widely between countries. Some countries (eg, Belgium and Netherlands) have lost their favourable positions due to an increasing fall-related injury burden of disease since 1990. Conclusions From 1990 to 2017, there was considerable variation in fall-related injury incidence, mortality, DALY rates and its composites in the 22 countries in the Western European region. It may be useful to assess which fall prevention measures have been taken in countries that showed continuous low or decreasing incidence, death and DALY rates despite ageing of the population.
  • McNeil, Robyn J.; McCarthy, Maria; Dunt, David; Thompson, Kate; Kosola, Silja; Orme, Lisa; Drew, Sarah; Sawyer, Susan (2019)
    This study examined the financial impact of cancer and the use of income support in adolescents and young adults (AYAs) with cancer and their parent caregivers. As part of a national Australian study exploring the psychosocial impacts of cancer, 196 AYAs ages 15 to 25 years, six to 24 months from diagnosis, and 204 parent caregivers from 18 cancer sites were surveyed. Logistic regression and chi-square analyses were conducted to assess the influence of clinical and sociodemographic variables on financial status. Qualitative responses were coded, and key themes were identified using thematic analysis. The findings indicate that more than half of AYAs and parents reported financial issues as a consequence of AYA cancer. Financial issues resulted from direct medical costs, associated costs from treatment, and indirect costs from loss of income. AYAs and parents reported that it was important for them to receive income support, both during and after cancer treatment. However, large proportions of those who reported needing income support had difficulty accessing it. AYAs and their families are substantially financially disadvantaged by cancer, many for a prolonged time. Patient- and family-centered assessments and interventions are required to reduce the financial burden of AYA cancer.
  • Pouzols, Federico Montesino; Toivonen, Tuuli; Di Minin, Enrico; Kukkala, Aija S.; Kullberg, Peter; Kuusterä, Johanna; Lehtomäki, Joona; Tenkanen, Henrikki; Verburg, Peter H.; Moilanen, Atte (2014)
  • Pankakoski, Maiju; Heinavaara, Sirpa; Sarkeala, Tytti; Anttila, Ahti (2017)
    Objective: Regular screening and follow-up is an important key to cervical cancer prevention; however, screening inevitably detects mild or borderline abnormalities that would never progress to a more severe stage. We analysed the cumulative probability and recurrence of cervical abnormalities in the Finnish organized screening programme during a 22-year follow-up. Methods: Screening histories were collected for 364,487 women born between 1950 and 1965. Data consisted of 1 207,017 routine screens and 88,143 follow-up screens between 1991 and 2012. Probabilities of cervical abnormalities by age were estimated using logistic regression and generalized estimating equations methodology. Results: The probability of experiencing any abnormality at least once at ages 30-64 was 34.0% (95% confidence interval [CI]: 33.3-34.6%). Probability was 5.4% (95% CI: 5.0-5.8%) for results warranting referral and 2.2% (95% CI: 2.0-2.4%) for results with histologically confirmed findings. Previous occurrences were associated with an increased risk of detecting new ones, specifically in older women. Conclusion: A considerable proportion of women experience at least one abnormal screening result during their lifetime, and yet very few eventually develop an actual precancerous lesion. Re-evaluation of diagnostic criteria concerning mild abnormalities might improve the balance of harms and benefits of screening. Special monitoring of women with recurrent abnormalities especially at older ages may also be needed.
  • Kukkala, Aija; Maiorano, Luigi; Thuiller, Wilfried; Arponen, Anni (2019)
    The concept of National responsibility species (NRS) was developed to coordinate the conservation efforts of species occurring in multiple countries. Calculated as the fraction of the global species' distribution within a country, it measures the contribution of a local population to global survival of the species. However, there may be more co-occurring species in one region than another, making the conservation of a species more cost-efficient in the first than the latter. If cost-efficient resource allocation is the goal, then identifying NRS should also be based on spatial priorities. We propose that a species is considered NRS when a large part of its distribution falls within high priority areas in a country. We identify NRS from spatial conservation prioritization outputs to (1) maximize the overall cost-efficiency of allocation of conservation resources and (2) to provide information about which species the spatial priorities are based on. We analyzed data on vertebrates in the Birds and Habitats directives in the EU28 countries and compared the traditional NRS measure to three alternative strategies. While the majority of species maintained their NRS status in most countries regardless of the approach, differences occurred, with varying numbers and identities of responsibility species in a country, or responsibilities for species shifting between countries. The differences were largest in geographically marginal countries and for species that were distributed across a few countries. Other NRS approaches may also be useful, and the choice of approach should ultimately depend on the purpose and complement information on conservation status in decision-making.
  • Makkonen, Petra; Heinävaara, Sirpa; Särkelä, Tytti; Anttila, Ahti (2017)
    Objective. Effectiveness of organized cervical cancer screening has been shown in several studies. However, screening among women aged Methods. In the Finnish Cancer Registry there were 284 cervical cancer cases diagnosed and tested below the age of 40 in 2004-2009. Screening histories and data on opportunistic testing for these women and their 1698 age-matched controls were derived from databases of the Mass Screening Registry and The National Institute for Health and Welfare from 1997 onward. OR's and 95% CI's for the association of cervical cancer diagnosis and participation in organized screening and opportunistic testing were estimated using unconditional logistic regression. Results were corrected for self-selection bias and attendance rate. Results. Among women aged under 25, OR of cervical cancer for any Pap test taken 0.5-5.5 years before diagnosis was 1.25 (95% CI 0.46-3.43). Attending only organized screening at age 25-39 resulted in OR 0.52 (0.36-0.77), attending only opportunistic testing in OR 0.86 (0.60-1.25) and attending both in OR 0.48 (0.29-0.79). Conclusion. Opportunistic testing showed no clear additional benefit on preventing cervical cancer. The study also supports findings on a smaller effect of screening in younger age groups. (C) 2017 The Authors. Published by Elsevier Inc.
  • ESO Hlth Econ Working Grp; Cadilhac, Dominique A.; Kim, Joosup; Wilsno, Alastair; Meretoja, Atte; Lees, Kennedy R. (2020)
    Introduction Approaches to economic evaluations of stroke therapies are varied and inconsistently described. An objective of the European Stroke Organisation (ESO) Health Economics Working Group is to standardise and improve the economic evaluations of interventions for stroke. Methods The ESO Health Economics Working Group and additional experts were contacted to develop a protocol and a guidance document for data collection for economic evaluations of stroke therapies. A modified Delphi approach, including a survey and consensus processes, was used to agree on content. We also asked the participants about resources that could be shared to improve economic evaluations of interventions for stroke. Results Of 28 experts invited, 16 (57%) completed the initial survey, with representation from universities, government, and industry. More than half of the survey respondents endorsed 13 specific items to include in a standard resource use questionnaire. Preferred functional/quality of life outcome measures to use for economic evaluations were the modified Rankin Scale (14 respondents, 88%) and the EQ-5D instrument (11 respondents, 69%). Of the 12 respondents who had access to data used in economic evaluations, 10 (83%) indicated a willingness to share data. A protocol template and a guidance document for data collection were developed and are presented in this article. Conclusion The protocol template and guidance document for data collection will support a more standardised and transparent approach for economic evaluations of stroke care.
  • Primmer, Eeva; Varumo, Liisa; Kotilainen, Juha M.; Raitanen, Elina; Kattainen, Matti; Pekkonen, Minna; Kuusela, Saija; Kullberg, Peter; Kangas, Johanna A. M.; Ollikainen, Markku (2019)
    Offsets for compensating biodiversity loss are increasingly suggested as a system for allocating responsibilities onto those actors who contribute to the loss. As the mechanism is outlined as a new opportunity, the expectations need to be analyzed relative to the ensuing changes in rights and responsibilities over biodiversity degradation, conservation and restoration. In this paper we conduct an analysis of rights and responsibilities using literature and empirical material. Our empirical case is in Finland, where ecological compensation and biodiversity offsets represent an emerging avenue for conservation. We find that rights to conservation, property and economic activity have generally not been explicitly addressed in parallel, and that the focus has been on evaluating biodiversity loss through ecological assessment or as an ethical notion. Offsetting literature focuses on developer rights to a predictable operational environment rather than on human rights to biodiversity or the property rights of offset suppliers. At the same time, the literature on offsets analyzing the responsibilities over management, avoiding degradation and meeting societal expectations, has placed much emphasis on governance and control by authorities. These analyses result in doubts and criticism of the capacity of governance arrangements to reach the set targets. Echoing the literature, the Finnish case shows that even though the mechanism is framed as a way to place the responsibility onto developers, numerous responsibilities are expected to be taken by authorities or a yet non-existing mediating actor, while developer rights are expected to be secured and landowner rights are either mostly assumed not to change, or not addressed at all. Our study shows that the assumptions on rights and responsibilities need to be exposed to empirical analysis, to support the design of meaningful new institutional arrangements.
  • Heikkilä, Katriina; Pentti, Jaana; Madsen, Ida E. H.; Lallukka, Tea; Virtanen, Marianna; Alfredsson, Lars; Bjorner, Jakob; Borritz, Marianne; Brunner, Eric; Burr, Hermann; Ferrie, Jane E.; Knutsson, Anders; Koskinen, Aki; Leineweber, Constanze; Hanson, Linda L. Magnusson; Nielsen, Martin L.; Nyberg, Solja T.; Oksanen, Tuula; Pejtersen, Jan H.; Pietiläinen, Olli; Rahkonen, Ossi; Rugulies, Reiner; Singh-Manoux, Archana; Steptoe, Andrew; Suominen, Sakari; Theorell, Tores; Vahtera, Jussi; Vaananen, Ari; Westerlund, Hugo; Kivimaki, Mika (2020)
    Background Job strain is implicated in many atherosclerotic diseases, but its role in peripheral artery disease (PAD) is unclear. We investigated the association of job strain with hospital records of PAD, using individual-level data from 11 prospective cohort studies from Finland, Sweden, Denmark, and the United Kingdom. Methods and Results Job strain (high demands and low control at work) was self-reported at baseline (1985-2008). PAD records were ascertained from national hospitalization data. We used Cox regression to examine the associations of job strain with PAD in each study, and combined the study-specific estimates in random effects meta-analyses. We used tau(2), I-2, and subgroup analyses to examine heterogeneity. Of the 139 132 participants with no previous hospitalization with PAD, 32 489 (23.4%) reported job strain at baseline. During 1 718 132 person-years at risk (mean follow-up 12.8 years), 667 individuals had a hospital record of PAD (3.88 per 10 000 person-years). Job strain was associated with a 1.41-fold (95% CI, 1.11-1.80) increased average risk of hospitalization with PAD. The study-specific estimates were moderately heterogeneous (tau(2)=0.0427, I-2: 26.9%). Despite variation in their magnitude, the estimates were consistent in both sexes, across the socioeconomic hierarchy and by baseline smoking status. Additional adjustment for baseline diabetes mellitus did not change the direction or magnitude of the observed associations. Conclusions Job strain was associated with small but consistent increase in the risk of hospitalization with PAD, with the relative risks on par with those for coronary heart disease and ischemic stroke.
  • Woestmann, Luisa; Stucki, Dimitri; Saastamoinen, Marjo (2019)
    Life history strategies often shape biological interactions by specifying the parameters for possible encounters, such as the timing, frequency, or way of exposure to parasites. Consequentially, alterations in life-history strategies are closely intertwined with such interaction processes. Understanding the connection between life-history alterations and host-parasite interactions can therefore be important to unveil potential links between adaptation to environmental change and changes in interaction processes. Here, we studied how two different host-parasite interaction processes, oral and hemocoelic exposure to bacteria, affect various life histories of the Glanville fritillary butterfly Melitaea cinxia. We either fed or injected adult butterflies with the bacterium Micrococcus luteus and observed for differences in immune defenses, reproductive life histories, and longevity, compared to control exposures. Our results indicate differences in how female butterflies adapt to the two exposure types. Orally infected females showed a reduction in clutch size and an earlier onset of reproduction, whereas a reduction in egg weight was observed for hemocoelically exposed females. Both exposure types also led to shorter intervals between clutches and a reduced life span. These results indicate a relationship between host-parasite interactions and changes in life-history strategies. This relationship could cast restrictions on the ability to adapt to new environments and consequentially influence the population dynamics of a species in changing environmental conditions.